Now from Eqn. (19.9) we get,

or,

(20.9)

Separation of variables requires now

= constant and = constant

So that = constant

an l ~ x  while .

These results agree with the measurements for .

The self-similar profile of as a function of η is now determined from

(20.10)

The function g( h ) has to be modeled as a function of F'.